Air-cooling system for explosive-engines.



No. 862,250. PATENTED AUG. 6, 1907 R. HERMAN.

AIR COOLING SYSTEM FOR EXPLOSIVE ENGINES.

APPLICATION IILED APR.25,1906.

101mm 2m:

UNITED sTATEs .REINHOL'D HERMAN, oR-cR-XFToN, PENNSYLVANIA.

{lira-C OL NG :sYsTEm-noit,niirnosivn nnemns.

Specification of Letters Patent.

Patented Aug. 6, 1907.

Application fiIe i1pii12a19oa Serial No. 313.526.

To dl l tvho'm it may concern: I

:FBe itkn wnthatI, RnrNno ri-HnmuA a citizen of the United States-of America, residing at Grafton, in the county of -Alleghenyfand State of. PennsyL makes and types of vehicles and engines without departing in anywise from the principle of the inventidn.

In the drawings, A indicates, the motor or engine, shown somewhat conventionally, as of the four-cylinder type, which engine or motor is suitably supported 3 from the chassis B. The type of chassis herein lillustrated involves improvements which have been made the; subject of separate applications, and consequently do not need to be herein referred to, as they are shown in tliis'application ior illustrative purposes only,

The motor'or-engine A, is inc-losed in a casing o hjood 6 5 ,7 O, the exact form "of which will depend on the of engine or motor which is to beinclo sed, the manner in which the engine maybe supported fromthe vehiclebody, and the exact form or shape'it' may be-desired to impartto the front portion of the hood. l l i do not wish to limit myself to the shape-of this hood or casing'herein shown, as the shape shown" is of a form particularly adapted to the chassis employed by me. This casing orhood may have anlopen intake end D, in

which a screen or equivalent motor-hiding device .75 may be'placed such screen howeverbeing of such nature that it will not interfere with a free inrush of air into the hood or casing. Y

As shown. in the present illustration, thisca/sing orhood C is contracted at a point in the rear of the engine or motor, into a narrowed extension E which may be a part'of the casing, or a pipe connected thereto, and which is preferably extended so as to discharge, or terminate at the rear of the vehicle. The exhaust pipe "F of the engine is located within the chamber G, back of the motbror engine, and terminates at the neck of the cone=shaped casing H, in the shape of a nozzle,v the same as is applied to ejectorsQ i Whnthe engine is running, it will be observed that with each exhaust thereof, a vacuum is created in the chamber G, and the suctionjdue to the creation of this vacuum causes the air to be drawn in from the front of the casing or hood, such air being in itsnatural 'cooL state, and-is drawn in with great rapidity across the engineor motor; serving to fiectually cool the same at all times that the engine 'oi motor 'is working. In other words, there is substantially a constant current of cool air passing across and around the motor or engine during the entire tim'ethe latter is working, the course oithe -air being shown by the arrows in the drawings. 10() It will of course be evidentthat the discharge ofthe pipefE- maybe at any point desiredy though I, have ,fou'nd' itentirely practical to extend same to the, rear of the machine. I l

Attention is also called to the fact thatall appurte-x 1Q5 nant parts including the exhaust pipe, mufiler and ejector are withiiithe zone of the constant current of cold air. thus pi eventlngefl of said parts from becoming 5 vania, have invented certainnew and useful Irnif: provements in Air-,Coolirig Systems for l Explosive- V Engines, oi which the following is a specification; reference being had thereinfto theaccompanying drawingil This invention has arias object the provision of l novel means for the automatic cooling of explosive engines by air, and relates more specifically to the air cooling OLGXPlOSlVQ, engines employed as motors 'for motor-driven vehicles.

v-. IEieretofor'e,: a iid (team; my: invention, air-cooling methods-i101}, 'cooliii g i of;" ,-th e enginee employed on motor-driven vehice'sh ave' been employed, but such systemslor methodsso far as I am aware have embodied a radiating orlfan intake system or. principle, of one novel form or another, and; a serious objection toanyoi such systems has been that theairbecomes warmed to such an extent before it reaches the engine that a considerable amount of its cooling-properties is lost.

'My invention aims to overcome this 'difficulty and to provide means for creating a vacuum through the medium of the exhaust of the motor or engine,-and, through the medium of theivacuuni created, establishing a suction suflicient to create or cause a current of fresh cold' air passing over the engine. or motor at all times that the engine is running, irrespective as to whether the moto'r vehicle is-moving or not. t The invention broadly consists in providing-a casing or hoodreun'ounding the motor or engine, which hood orcasing may have asingle or a series of airin-. takes at the} front, and which hood is preferably narrowed down at a point in-the rear of the engine or motor, andextended either to the rear end-oi the motor vehicle, or terminated at any desired epoint the rear of the engine or motor. The exhaust from the engine is within the casing or hood,jand each exhaust of the 40 engine tends to create a vacuum within the casing or hoodat the rear oithe engine,'.which vacuum is instantly filled. byran inrush of air from the front of the casing or' hood this fair passing over,x'iunder, and around theengine ormotor -'and which being cool air not previously brought contact-with any heated, parts of the mechanism, serves to maintain the engine cylinders in perfect working order:

, m the accompanyingj drawingswhich illustrate a, central longitudinal view of a-chassis and. running gear} of a motor-driven vehicle, have shown a practical embodiment ofniy invention, withoutin any manner intending, to limitmyseli io herein shown, as, it foi come; be evident that changes may be made in detailsto conform various overheeted, and as herein shown, part 0; the driving mechanism is also within the zone of this current of cold air.

Having fully deecribed my invention, what I claim as new and desire to secure by Letters Patent, iezsaid hood being tapered at the rear of the engine and havl eeegeeo ing an extension projecting beyond the tapered part, and 10 In testimony whereof I aflix my signature in the pres- 15 ence of two witnesses.

REINHOLD HERMAN.

Witnesses: to i A. M. WILSON, E. E. Po'r'rnn. 

